CDPH Warns Public Not to Consume Sport-Harvested Bivalve Shellfish from Santa Barbara County​​

March 20, 2025  

SN25-002​ 

What You Need to Know: CDPH is advising the public not to consume sport-harvested bivalve shellfish, including mussels, clams, and scallops, gathered from Santa Barbara County. ​

Sacramento – The California Department of Public Health (CDPH) is advising consumers not to eat sport-harvested mussels, clams, or scallops from Santa Barbara County.    

Dangerous levels of paralytic shellfish poisoning (PSP) toxins have been detected in mussels from Santa Barbara County. The naturally occurring PSP toxins can cause illness or death in humans. Cooking does not destroy the toxin.  

PSP toxins affect the nervous system, producing a tingling around the mouth and fingertips within a few minutes to a few hours after eating toxic shellfish. These symptoms are typically followed by loss of balance, lack of muscular coordination, slurred speech and difficulty swallowing. In severe poisonings, complete muscular paralysis and death from asphyxiation can occur.  

This warning does not apply to commercially sold mussels, clams, scallops, or oysters from approved sources. State law permits only state-certified commercial shellfish harvesters or dealers to sell these products. Shellfish sold by certified harvesters and dealers are subject to frequent mandatory testing to monitor for toxins.  ​

You can get the most current information on shellfish advisories and quarantines by calling CDPH's toll-free Shellfish Information Line at (800) 553-4133 or viewing the recreational bivalve shellfish advisory interactive map. For additional information, please visit the CDPH Marine Biotoxin Monitoring web page.   ​